To set up your router for fiber internet quickly, connect the router to your fiber modem, access the router's settings via a web browser, and input the provided ISP credentials. As far as I understand, I need a PPPoE username and password to connect. I never received it from Telekom, as well as Access number (Zugangsnummer). Maybe I'm wrong and the connection. In this guide, we'll walk you through how to connect a fiber optic cable to a router safely and efficiently. With. Fiber optic internet is generally installed in the following 5 steps, which we'll dive deeper into throughout the article: A technician checks your area and prepares the connection from the neighborhood fiber network. A fiber cable (drop) is run from a nearby terminal that could be either a pole or. To establish an internet connection via your fiber optic connection (Fiber to the Home, FTTH), connect the FRITZ!Box to the fiber optic connection and enter your account information in the FRITZ!Box user interface. If your line is from the Deutsche Telekom, use the guide Setting up the FRITZ!Box. Fiber internet installation delivers the high-speed connectivity modern businesses need for video conferencing, cloud applications, and data-intensive operations.